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1. (WO2018066301) PROJECTION-TYPE VIDEO DISPLAY DEVICE, CONTROLLER, AND MULTI-PROJECTION SYSTEM

Pub. No.:    WO/2018/066301    International Application No.:    PCT/JP2017/032446
Publication Date: Fri Apr 13 01:59:59 CEST 2018 International Filing Date: Sat Sep 09 01:59:59 CEST 2017
IPC: G09G 3/34
G03B 21/00
G03B 21/14
G09G 3/20
G09G 5/00
H04N 5/74
H04N 9/31
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: SAKATA Kazuaki
坂田 一朗
Title: PROJECTION-TYPE VIDEO DISPLAY DEVICE, CONTROLLER, AND MULTI-PROJECTION SYSTEM
Abstract:
A projector provided with a light source, a sensor, an adjustable drive circuit, and a control unit communicatably connected to an external controller. The control unit measures by the sensor the intensity of light generated by the light source in response to a predetermined test signal, and transmits the measured value of light intensity to the controller. The control unit receives from the controller the set value of light intensity determined by the controller so that the luminances of videos projected by a plurality of projection-type video display devices match each other. The control unit causes the drive circuit to be operated so as to generate a light of the intensity determined by the controller.